Insulated battery-cell.



V. G. APPLE.

INSULATED BATTERY CELL. APPLICATION FILED BBPT.14, 1907.

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954,370. Patented Apr. 5, 1910.

2 SHEETS-SHEET 2.

VINCENT G. APPLE, OF DAYTON, OHIO.

INSULATED BATTERYv-CLL.

Specification of Letters Patent.

yApplication filed September-14, 1907. Serial No. 352,868.

To all whom it may concern:

Be it known that I, VINCENT G. APPLE, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain" new and useful Improvements in Insulated Battery-Cells, of which the following is a speci ication.

My invention relates to insulated battery cells, of the type wherein the metallic structure of the cell is exteriorly insulated throughout by a body of insulating material so applied thereto, as by vulcanization, as to form therewith a substantially unitary structure, as broadly covered in my prior patent No. 767,323, dated August 9th, 1904:.

One of the salient objects of my present invention ,is to provide an imin'oved-construction of a battery cell'of the characteristics described, particularly applicable to lead bottle storage batteries, and to this end my invention consists of the features of construction and arrangement of parts hereinafter more fully described and specified in the claims. l

In the drawings, wherein I have illustrated a practical embodiment of my invention; Figure 1 is a side view of a battery with parts in elevation and parts in differ# ent sections, as indicated by line 1-1 in Fig. 2; Fio. 2 .is a top plan Jview; Fig. 3 is an enlarged section on a horizontal plane of a fragment of the cell wall; Fig. t is an end view of the negative lead element or grid. Fig. 5 is a vertical sect-ion therethrough; Fig. 6 is a detail of a positive-terminal aperture; Fig. 7 is an enlarged sectional detail on a vertical line of the grid construction, and; Fig. 8 is a horizontal section of the grid.

Throughout the several views like numerals of reference refer always to like pan-ts.

In the present embodiment of my invention I provide a unitary grid or shell in the form of a hollow rectangular parallelepipedon to constitute the negative element of a battery unit, thesides and ends whereof are integrally cast, and each of grill construction, presenting apertures for the reception of active material extending entirely through the grid wall and tapering from the exterior' toward the interior surface thereof, such in tegral casting preferably including a top, provided with suitable apertures and appui'- tenances, useful in the finishing of the battery, made therein or connected therewith,

and preferably having a bottom opening, through which the positive element maybe inserted, adapted for easy closure in the completion of the cell. l `urthcrmore such cell embodies, whencompletedya covering or envelop, of insulating material, 'connected with the negative element by vulcanization or equivalent practice, for intimate and permanent union with the metal of the grid and the metallic or other active' material ,wherewith the grid ma be filled or pasted.

In the specific embo iment of my invention shown, 10 indicates in general the negative grid, preferably constructed with five of its sixwalls cast in an integral piece.

In the construction shown, 11-11 indicates sideiwallsffarranged in parallelism, and 12--12 end Walls likewise in parallelism, preferably constructed in an integral piece i to provide vert-ical corner posts 13, connected by horizontal parallel side ribs 14 and horizonital end ribs 14X, which horizontal ribs are at suitable intervals traversed and united by ve'itieal side ribs l5, and end ribs 15. I have found it advantageous to make the vertical ribs heavier than the horizontal ribs to secure maximum strength' wit-h minimum inlterior exposure of the grill work of the grid. Both the vertical and horizontal ribs are preferably made to taper outwardly, so that the apertures and material spaces there- 'between taper inwardly, as illustrated in Figs. 3 and 7.

The top of Ithe grid is preferably made integral therewith and of isolid construct-ion, and to this end the walls ll-1l are provided with solid extensions 11 and the end walls 12 with extensions 19 united by a cover plate 16. The top 16 preferably has rigidly ailixed therein in fthe casting operation a. terminal screw 17, and preferably has made thereon companion exterior' bosses 18, through which extend inwardly-tapering apertures 19, and also a deeper interior boss Q0 strengthened by ribs 21, and having therein an inwardly tapering aperture 2Q, for the reception of the terminal member of the positive plate. K

For venting `the gases from the cell I provide a hollow post 13 at one corner of the cell, preferably burned to or made integral with the corner post. To afford such vent duet one of the corner posts, indicated as 13, which extends clear to the top 16 of the casing, is enlarged and has made therein a duct 23 extending to the' interior of the Patented Apr. 5, 1910.

grid-in a downward direction.

y is applied and burned in the grid.

thin, separated, outwardlyv tapering, horicasing directly during the manufacture of the battery the continued through the covering of insulating- 4andan insulating envelop of material suslceptuble to vulcanization vulcanized to said below the top thereof, and at its bofttom opening to' the exterior of the The bottom edge lor the gridis provided by a continuous integral band 24 formed to provide a shoulder 24 uponvwhich may be seated a dat strip 25ct lead, which during the construction of the battery is burned in place to close the bottom of the gridV In' the completion of the gridstucture integral grilled Structure described. is first cast with its bottom open, as described, and isthen filled of. pasted with activel material, generally indicated in the drawing as 27. hext the positive plate, fragmen` tarily indicated in Fig. 4l as 28, is inserted, with its IJterminal 28" projecting through and insulated from the externalaperture 22 and the body 'of the plate suitably insulated as by suitable insulators 29, 29 from the surrounding g'rid, and then the bottom strip 25 of rubber or other in my prior patent, intimately secured 30 Yindicates a covering composition, as described vulcanized or otherwise to the completed grid structure to form therewith substantially an inseparable construction covering completely the sides, ends and bottom of the cell, and so much of the l top thereof as is necessary'or desirable,-

It will be understood that the duct 23 is material, and that the apertures 19 are left open for the introduction of the electrolyte and the expulsion of air.

' It will be apparent that the construction described provides avery simple and cheap battery of the le'ad bottle type, easy to cast in one operation, requiring a minimum ainounit of joining of parts by burning, rigid and easy of manipulation in lling, and strong and impermeable in completed condition by virtue of the'intiinate and substatially`- indestructible association oi' the jhnpervious insulating covering with the metal of` the grid and the active material.

Having thus described my invention, what I claim and desire to secure by Letters Patent, of the United States, is:

l. A battery c ell providing a receptacle for a plate of opposite polarity., comprising an incasing hollow grid of rectangular parf allelepipedal configuration having side and end walls, cast in an integralstructure, consisting of corner posts united laterally by `zontal ribs, and vertical, outwardly tapering, separated ribs and leaving an openin at the bottom; a bottom uniting said wa. ls,

for a plate of opposlte polarity, an integral open bottomed'shell having side, end and top walls, cast in one piece, said side walls being provided withA inwardly tapering apertures extending entirely therethrough, a bottom member associated with said casting and anenvelop material vulcanized to tom to cover the sides,

ing side walls, support active material, end walls, and a lollow part fixed 'to thel an aperture opening grid below the top, aperture to vent gases downward from the top of the cells interior, envelop intimately canized to said grid, l -ing registering with t low part aforesaid.

low, rectangular parallelepipedal uniform polarity; ing a top wali, and side and end wal s of grid construction andbeing open rat its bottom to receive a plate 'of op osite polarity, an electric terminalnpon said a separable plate for opening'.

and lpermanently l 2. 'A battery cell providing a receptacle comprising of insulating said casting and botends and bottom,

cell providing a receptacle 3. In a battery for a plate of opposite polarity, an open bot' tomed cast sing lgrilled side and en d walls and an integral top, said top tures, and having permanently connected therewith a member tightly secured in the open bottom of said. grid; eanized to the side, perrpanent and intimate association therewit e piece grid or shell, havinghaving therein suitable aperterminal member; a bottom andan insulating envelop vulend and bottom walls for cell, a cast` grid compris- 4. In a battery constructed to receive and grid provided with to the interior of the and with a bottom vent and an insulatingand permanently vulroviding a vent o en"- e opening in the ol# cell, a cast, one-piece, holt grid, forl said hollow grid com ris- 5. in a battery top wall, and closing the bottom 6. In a batteryeell for the reception of a plate of opposite polarity, a grid consistin ,of side walls Awalls being ci marrow, outwardly-tapering, horizontal and vertical ribs, separated by s aces extending entirely suitable apertures including all ina single integral casting.

and end walls, some of sai grill construction comprising through the wall an top, providing an open bottom,

In testimony whereof If hereunto set my l hand in the presence of two witnesses.

v VNCENT G. APPLE. In the presence of- N. E. SNrDnR,

H. B. BATES. 

